Sudden loss of power...bad gas or??? - Triumph Forum: Triumph Rat Motorcycle Forums
» Main Menu

Discussion Forums
 » Twins
 » Tiger
 » General
 » RAT

Features
 » Blogs

Motorcycle.com Links

Contribute
 » Photo

Motorcycle Forums
» Insurance
» Sponsors
» Our Partners
»ATV Reviews
»Motorcycle Games

Twins Technical Talk Technical Talk for Hinckley Triumph Twins: Bonneville, T100, Speedmaster, America, Thruxton, and Scrambler.

Reply
 
LinkBack Thread Tools Display Modes
Old 06-14-2008, 05:15 PM   #1 (permalink)
New Member
Grand Prix 125
Main Motorcycle: '14 Rocket III Touring
 
Join Date: Apr 2008
Location: Las Vegas, NV
Posts: 28
Other Motorcycle: '12 Honda Shadow Spirit
Extra Motorcycle: -11 HD Fat Boy
Sudden loss of power...bad gas or???

Hey all! I've got a new 2007 America...absolutely love the bike! ..but have had a weird loss of power...I'll say 3 times now. I did the break-in period..running around town and such...then had the 1 month service done (750 miles)...no issues were noted. I did a few more hundred miles and then decided to head to my Mom's house 550 miles away (which is where I sit now). 300 miles into the trip...15 miles after some fresh BP 89 octane gas the bike lost power..but did not die...I went to reserve and back with no effect (just in case of dirt or something in the tank). After a few revs I was back out in traffic with no issues for 15 more miles when it happened again..but this time it did die. I started it back up..no issues...went 12 more miles and decided to stop and put in 93 octane from a Shell station. I road the remainder 220 miles to my Mom's without incident...so I assumed bad gas. Now today..with only 117 miles on a tank (of which I'm only putting premium at this point) it dies again..and I switch to reserve...started it...moved back into traffic...put the petcock back to 'ON' and then rode 6 more miles to a gas station and actually put in 3.2 gallons...seems that tank only got 37mpg when I normally get 45mpg's. So...I can buy the lower gas mileage since 60 miles of it was the end of the trip and the flow of traffic was rather brisk (about 80-85mph)...so here are my assumptions:

1. On Friday I really did have bad gas...though it doesn't make total sense to me why the bike would restart and run fine for a while
2. The lower gas mileage was due to speed and wind conditons...but can you really go 6 miles on the gas sitting in the carbs??? (since I went from reserve back to 'ON')

I'm hoping all is well...as there are no Triumph dealers here and I have to ride the 550 miles back to Omaha on Tuesday.

Any advice or thoughts from the experts?

Thanks! Michael G.
Michael-G is offline   Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Old 06-14-2008, 07:34 PM   #2 (permalink)
Senior Member
Pole Position
 
Join Date: Jun 2005
Location: Stuart Fl
Posts: 3,753
Power

1st- Dont use ANYHTING but premium, the $ diff isnt that.
2nd- It may be some paint / crap in the tank, tho not likely.
3rd- When it dies, release the gas cap &see if that makes a difference? Could be a clogged or crimped vent line.
4th- Dump in a little injector cleaner in the tank. It will clean out any crap in the jets.

Sounds like a venting issue. I only use premium to make sure I am getting rweal gas in the tank. Not serouus but a long trip comming so youi want to make sure you are gonna get home! Check the vent line to make sure there are no crimps or clogs. When it dies- relaese the cap rite away & try ro restart. If it does - its the vent line! Good luck & have a safe ride home!!
__________________
CAPT D
CAPTDON is offline   Reply With Quote Quick reply to this message
Old 06-14-2008, 09:50 PM   #3 (permalink)
Senior Member
SuperStock
 
Join Date: Feb 2008
Location: Hot Springs Village, Arkansas
Posts: 267
I think you're just running out of gas. My mileage is much worse at interstate speeds. Sounds like every time you put in gas or swapped to reserve the bike recovered. I've seen as few as 92 miles to reserve on my Scrambler in windy interstate riding. I also notice the bike seems pretty sensitive to low fuel levels in the tank. It starts running worse even though there is a little fuel left and you'd think it shouldn't be a problem.
Dale_K is offline   Reply With Quote Quick reply to this message
Old 06-14-2008, 10:13 PM   #4 (permalink)
Member
Grand Prix 250
Main Motorcycle: '07 Bonnie Black
 
gritkisser's Avatar
 
Join Date: May 2008
Location: Gainesville, FL
Posts: 78
Other Motorcycle: '09 KLR650
Extra Motorcycle: '92 KZ1000P
I agree w/ Captdon, sounds like a venting issue. Maybe unbolt your tank and check the vent tube for kinks. My local service tech had mine pinched after my 500mile service.
__________________
Go Gators!
gritkisser is offline   Reply With Quote Quick reply to this message
Old 06-15-2008, 12:20 PM   #5 (permalink)
Senior Member
Powerbike
 
dledinger's Avatar
 
Join Date: May 2008
Location: North Carolina
Posts: 399
Why 92 Octane? It shouldn't be neccessary with stock compression.
dledinger is offline   Reply With Quote Quick reply to this message
Old 06-15-2008, 01:25 PM   #6 (permalink)
Senior Member
Formula Extreme
 
Orpheus's Avatar
 
Join Date: Jun 2006
Location: Huntington Bch, CA
Posts: 486
Quote:
Originally Posted by CAPTDON View Post
1st- Dont use ANYHTING but premium, the $ diff isnt that.
Why do people say this? Running 91+ octane fuel in an engine tuned for 89 octane provides virtually no benefit. I've put ~22,000 miles on my bike using 89 (in a few emergencies, 87) octane with no problems.
__________________
2006 Triumph Bonneville T100, 1968 Honda CL350K0, 1973 BMW R60/5 LWB Toaster
Orpheus is offline   Reply With Quote Quick reply to this message
Old 06-15-2008, 01:29 PM   #7 (permalink)
Senior Member
Powerbike
 
dledinger's Avatar
 
Join Date: May 2008
Location: North Carolina
Posts: 399
The word "Premium" is deceiving....IMO.
dledinger is offline   Reply With Quote Quick reply to this message
Old 06-16-2008, 09:26 AM   #8 (permalink)
New Member
Grand Prix 125
Main Motorcycle: '14 Rocket III Touring
 
Join Date: Apr 2008
Location: Las Vegas, NV
Posts: 28
Other Motorcycle: '12 Honda Shadow Spirit
Extra Motorcycle: -11 HD Fat Boy
1st: I can tell you I'm sold on Premium...and not simply for the increased octane but the overall quality. True the bike can run on mid-grade...but my experience has been that you have a higher probability of better quality gas when you use premium. ...and to be honest I'm not going to complain about spending an extra 40 to 60 cents at the pump when I fill up... it's worth the peace of mind.

2nd: Agree on could be but probably not crap in the tank...

3rd: I reached under and followed the vent line...seems to be OK.. and it hasn't happened again. In fact doing 60 or below driving I got 47.5mpg's on the last tank

4th: I've got a bottle in the saddlebags and wanted to see if it happens again first. Thus far I've had no issues over the past 150 miles.

Not sure if it matters but I do have the Triumph upgraded pipes and they did rejet the carb to accomodate...but like I said...I made a point to have them check the carbs at the 1 month service and I was told they are "spot on!"

Thanks for the help and feedback! I'm headed out to a Motorcycle candy store today (60 miles away) and then the nice 550 mile trip tomorrow. WOOT!

Michael G.
Michael-G is offline   Reply With Quote Quick reply to this message
Old 06-16-2008, 03:58 PM   #9 (permalink)
Member
Grand Prix 250
Main Motorcycle: 2007 Bonnie T100 Blk/Red
 
BriGuy375's Avatar
 
Join Date: Jul 2007
Location: State College, PA
Posts: 57
I have a heavily modded Subaru that i absolutely must use 92, preferably 93 ocatane in because its tuned for it. Anything less and it knocks badly and switches to a reduced timing map. But my experience with premium fuel recently, especially with the price increases in the US, is that no one is buying it anymore, and its sitting in stations tanks longer and longer, and i am getting progressively crappier fuel with every fillup. If you dont absolutely need high octane as a result of tuning or compression, i would stay as far away from it as i could-

My bike gets the recommended 89, nothing more, and runs like a champ.

Brian
__________________
2007 Bonnie T100 Black/Red, AI Removed, Reduced Airbox - Uni-Pods, NB pilot thumbscrews, Predators, 140/42, 1 shim @ 0.020", pilots 2.5 turns out
BriGuy375 is offline   Reply With Quote Quick reply to this message
Old 06-16-2008, 04:08 PM   #10 (permalink)
Senior Member
Formula Extreme
 
Iceseven's Avatar
 
Join Date: Sep 2005
Location: Estes Park, Colorado
Posts: 902
Brian makes a good point about premium gas sitting, I never see anyone buying it. I use 89 and have in all of my bikes, never had any problems and never had any great improvement using higher octane in power or fuel mileage. Run a can of Seafoam through it from time to time.
__________________
2006 Scrambler, Previously had 2004 Bonnie Black, 1995 T-Bird, 1974 Trident, various street and dirt bikes.

Last edited by Iceseven; 06-16-2008 at 04:12 PM.
Iceseven is offline   Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Triumph Forum: Triumph Rat Motorcycle Forums forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter your valid email address, that can receive an automated confirmation message. Otherwise, you won't be able to gain full access.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Big power loss bcade Speed Triple Forum 18 04-18-2007 08:39 PM
Power Loss wozman Twins Talk 3 11-12-2005 02:24 PM
lOSS OF POWER. kilda Hinckley Classic Triples 4 10-07-2005 04:16 PM
Trident power loss Hinckley Classic Triples 2 02-13-2005 06:22 PM
Trident power loss Maintenance & Workshop Talk 8 02-13-2005 06:19 PM

Powered by vBadvanced CMPS v3.2.2

All times are GMT -4. The time now is 09:33 AM.



Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Motorcycle News, Videos and Reviews
Honda Grom Forum Harley Davidson Forum Honda 600RR Kawasaki Forum Yamaha R6 Forum Yamaha FZ-09 Forum
1199 Panigale Forum Roadglide Forum Honda CBR1000 Forum Vulcan Forum Yamaha R1 Forum Yamaha R3 Forum
Ducati Monster Forum Harley Forums Honda CBR250R Forum ZX10R Forum Star Raider Forum Yamaha Viking Forum
Suzuki GSXR Forum V-Rod Forums Honda Shadow Forum Kawasaki Motorcycle Forum Star Warrior Forum KTM Duke 390 Forum
SV650 Forum BMW S1000RR Forum Honda Fury Forum Kawasaki Versys Forum Drag Racing Forum Ducati 899 Panigale Forum
Suzuki V-Strom BMW K1600 Triumph Forum Victory Forums Sportbikes BMW NineT Forum
Volusia Forum BMW F800 Forum Triumph 675 Forum MV Agusta Forum HD Street Forum Suzuki GW250 Forum
Yamaha Motorcycles Victory Gunner Forum Honda Vultus Forum HD LiveWire Forum Ninja H2 Forum

Garage Plus vBulletin Plugins by Drive Thru Online, Inc.